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HSChapter 84
U.S. imports of hot or combination hot & cold metal rolling mills (except tube mills) (HS 845521) totaled $8.3M in April 2026, traded with 23 countries.
Importers of Hot or Combination Hot & Cold Metal Rolling Mills (Except Tube Mills) paid $211K in duties in April 2026 — an effective duty rate of 2.9% on $7.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Hot or Combination Hot & Cold Metal Rolling Mills (Except Tube Mills) imports of $8.3M in April 2026 ran 99% above the year-to-date monthly average of $4.2M.
Last updated: April 2026 dataHot rolling mills and combination hot/cold rolling mills are capital-intensive steelmaking assets used to reduce metal slabs, billets, and blooms into sheet, strip, plate, and structural profiles. Italy and Germany are the leading US suppliers under this heading, reflecting the concentration of precision mill-building expertise in European industrial machinery clusters. The single 10-digit line 8455210000 captures the full heading, so classification disputes typically turn on whether a mill is configured primarily for hot or cold reduction, or whether it qualifies as a tube mill excluded from this subheading. Importers should also assess Section 232 exposure, which can apply to certain steel-related capital equipment depending on configuration.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A combination mill is designed to perform both hot and cold reduction passes in a single integrated line or reversing stand. If the mill is engineered exclusively for cold reduction without any hot-rolling capability, it falls under 845522 instead. The key classification evidence is the mill's design specifications, temperature range, and whether the hot-rolling function is integral or merely incidental.
Yes — tube mills are explicitly excluded from 845521. Rolling mills designed specifically to form tubular products classify elsewhere in Chapter 84. Importers should review the mill's engineering drawings and intended end-use to confirm the correct heading before entry.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8455210000 | HOT OR COMBINATION HOT & COLD ROLL MILL EXC TUBE | $8.3M | 2.91% | $211K |
HOT OR COMBINATION HOT & COLD ROLL MILL EXC TUBE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8455210000 | HOT OR COMBINATION HOT & COLD ROLL MILL EXC TUBE | $499K |
HOT OR COMBINATION HOT & COLD ROLL MILL EXC TUBE
14 no
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Georgia | $3.5M | -- | -$3.5M |
| Ohio | $1.8M | -- | -$1.8M |
| California | $1.0M | -- | -$1.0M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $3.9M | -- | -$3.9M |
| BALTIMORE, MD | $1.7M | -- | -$1.7M |
| LOS ANGELES, CA | $1.0M | -- | -$1.0M |